Colleagues,As some have stated before Tjernlund has very good reputation. I was aware that there was consideration within Tjernlund to manufacture a radon fan but I was not aware of details until I saw their release 10 days ago or so. I have sent an inquiry about research involving fan air-tightness (one of several concerns) and their diluting vent discharge. I will share results if I receive any.While most of us are fully aware of U.S. radon mitigation standards involving fan and discharge locations, there is limited research that support these positions. Furthermore, the standard of practice in the rest of the world is indoor radon fans and rim discharges. Given the difference in standards of practice, the WHO's mitigation recommendations are to recommend - - - but not require - - - fans outside the habitable space with discharges ideally above the roof.
I believe it best be first open to different approaches to radon risk reduction. Let's hear from Tjernlund, see what we can learn, and continue the discussion.Bill
On Tue, Sep 6, 2011 at 5:38 AM, wrote:
Folks,
FYI. In case you're not on the listserve. I found this rather
interesting and I could see regulatory States potentially prosecuting
for this product if anyone in their State purchases this on-line.
Mike
Michael H. Murphy, Health Physicist/RSO
Quality Assurance Coordinator for Radiation
Regional Radon Coordinator
Air and Radiation Division
USEPA R-5
Phone: 312-353-6686
Fax: 312-408-2268
----- Forwarded by Michael Murphy/R5/USEPA/US on 09/06/2011 05:34 AM
-----
From: Tony Kiburis
To: RADONPROFESSIONALS@LIST.UIOWA.EDU
Date: 09/05/2011 09:28 PM
Subject: [RNPROF] Two new "Radon Fans"
Sent by: International Web Resource for Radon Professionals
Hi Friends,
Check out this URL; this firm, Tjernlund, from White Bear Lake, MN, they
have two interesting radon fans:
1. Radon VAC - Side Wall Radon Mitigation System
It seems that they have adapted their Power Vent Technology for
radon applications
Count how many E-2121 violations are pictured on the web site.. I
see three
2. PVC4 Radon Mitigation System Booster Fan - looks like a computer
muffin fan with two 4" PVC couplings attached.
http://www.tjernlund.com/retail/radon-vac-mitigation-fan.htm?gclid=CJauqrTCh6sCFepgTAodjR3A2A
These fans are now appearing on Ebay.
Tony
********** RN PROF (Subscription changes - archives) -
http://list.uiowa.edu/scripts/wa.exe?SUBED1=RADONPROFESSIONALS&A=1
***********
-- William J. AngellProfessor, College of Design, University of Minnesota and Director, Midwest Universities Radon Consortium www.cce.umn.edu/radon
Chair, Prevention and Mitigation Working Group, International Radon Project, World Health Organization www.who.int/ionizing_radiation/env/radon/en/
Past-President, American Association of Radon Scientists and Technologist www.aarst.orgVoice: 001-612-624-6786
********** RN PROF (Subscription changes - archives) - http://list.uiowa.edu/scripts/wa.exe?SUBED1=RADONPROFESSIONALS&A=1 ***********
From Name
William Angell
From Address
wangell@UMN.EDU